Transporting animals to Port Gentil (Libreville)

Hello all,My husband and I will be moving to Port Gentil in the next month or two and would like to bring our 2 cats and dog with us. We will be coming from New Orleans, LA so it will be quite a big trip for the animals. Of course we will ensure appropriate vaccines and paperwork. Our dog will travel in the cabin as she meets the requirements, however the cats will be in the pet compartment with the cargo. Does anyone out there have experience with this? My biggest concern is landing in Libreville- 1.) how they will handle the heat before we pick them up and 2.) Will there be any difficulties taking them on the smaller plane from Libreville to PoG?